The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2008
Filed:
Jun. 11, 2002
Hideki Sano, Hirakata, JP;
Masaya Sugafuji, Hirakata, JP;
Norihiro Yamamoto, Katano, JP;
Masaki Kitagawa, Shijonawate, JP;
Kiyomi Kato, Moriguchi, JP;
Hiroshi Matsuno, Kadoma, JP;
Jun Nunome, Yawata, JP;
Yutaka Kawatate, Hirakata, JP;
Hideki Sano, Hirakata, JP;
Masaya Sugafuji, Hirakata, JP;
Norihiro Yamamoto, Katano, JP;
Masaki Kitagawa, Shijonawate, JP;
Kiyomi Kato, Moriguchi, JP;
Hiroshi Matsuno, Kadoma, JP;
Jun Nunome, Yawata, JP;
Yutaka Kawatate, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A non-aqueous electrolyte secondary battery comprising: an electrode plate assembly; a non-aqueous electrolyte; and an outer jacket accommodating the electrode plate assembly and the non-aqueous electrolyte therein, the electrode plate assembly comprising a positive electrode plate, a negative electrode plate and a separator interposed between the positive electrode plate and the negative electrode plate, the separator comprising a polyolefin resin, wherein (1) the separator comprises at least one layer comprising a polypropylene resin, (2) the layer comprising a polypropylene resin contains an antioxidant with a melting point of 60° C. or higher, and (3) the layer comprising a polypropylene resin and the positive electrode are in contact with one another.